Cameras are used at a number of IMPROVE monitoring sites to monitor the
scene. Images from monitoring sites with over five years of data where
selected to capture the range or "spectrum" of visual conditions at
each site. This web page provides access to these photographs for each
site. In addition, these photographs have been archived on CD-ROMs.
Volume 7, No. 3 (Summer 1998) for a discussion on the creation and specific
contents of slide spectrums.
Photographs of Good and Bad Visibility Days at Class I areas
National Park Service Special Images
(pdf Document 1.3 meg)-
Images representing the cleanest and the haziest clear sky, non-weather, days
found in the IMPROVE 35mm slide data base. Extinction coefficient estimates are
also provided based upon the slide contrast measurements, the average species
concentrations of the 20% lowest and highest fine mass days, and annual
estimates of the f(rh).
Photographs for Each
Class I Area
are in the process of providing on-line access to the photographic
archive. The sites for which the visual spectrums are available are:
Note: the photo CD Images
are not available over the web